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阀门知识
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石油炼制用阀门使用特性的分析
发布时间:2019-08-31   点击次数:144次

石油炼制用阀门使用特性的分析

    随着石油炼制和石油化工工业的迅速发展和进步,装置的长周期安全运行以及装置大型化趋势对阀门的使用提出了更为严格的要求,科学合理地解决好阀门问题就能够降低装置的建设费用、保证生产长周期安全运行。
众所周知,石油化工生产装置中的介质大多具有毒性大、可燃、易爆和腐蚀性强的特点,运行工况又复杂苛刻,操作温度、压力高,开工周期长(目前石化企业多是两年一检修或三年两检修),阀门一旦出现故障,轻者导致介质泄漏,即污染环境又造成经济损失,重者导致装置停工停产,甚至造成恶性事故,因此必须给予足够的重视。
下而结合石油炼制装置阀门的使用情况,从标准执行的角度谈一下自己对标准与阀门质量关系的看法。
    1 阀门使用概况
    石油炼制用阀门使用特性的分析对各类炼油装置工程费用进行的统计、分析表明,管道工程费用约占总工程费用的 10~30%,而阀门的费用约占管道工程费用的 30%,是管道器材费用的主要组成部分,能否正确地选用和生产这些阀门,不仅关系到装置的安全运行,而且对装置建设的经济性有着比较大的影响。
    石油化工装置常用的阀门主要有闸阀、截止阀、止回阀、安全阀、蝶阀以及球阀等通用阀门,另有少量的特殊阀门或专用阀门。从统计数据来看,闸阀用量最大,约占阀门用量总数的 80%,其次是截止阀约占 10%,其余为球阀、蝶阀、疏水阀、止回阀以及安全阀等。从材质上来看,主要以碳钢为主,约占阀门总量的 90% 左右,其余为合金钢及不锈钢。除了生产装置外,储运系统工程、给排水系统、锅炉系统、自备电站等系统也大量选用通用阀门,由于炼油厂工艺和规模的不同,一个炼油厂的阀门总数达数万个到数十万个,总重可达几千吨。下表是几个炼油典型装置阀门使用情况的统计数据。显而易见,从使用数量上来讲,碳钢阀门占主导地位,按表中顺序分别占阀门总量的 89.7%、96.2%、89.3%、90%、94.5%、95.3%,按重量则分别占总重量的 80.4%、88.4%、95.3%、96.8%、73.1%、90.8%。这里需要说明的是,由于产品方案和工艺过程存在着一些差异,这些数据会有所变化,但大致比例关系不会有大的区别。
    炼油典型装置阀门用量情况
装置名称 碳钢阀 合金钢、不锈钢阀
300 万吨/年 常减压蒸馏装置 1476 77.8 170 19
250 万吨/年 常减压蒸馏装置 2292 117.8 91 15.4
200 万吨/年 重油催化裂化装置 4612 290.4 552 14.2
140 万吨/年 重油催化裂化装置 3860 282 428 9.3
100 万吨/年 减粘裂化装置 1798 34 104 12.5
100 万吨/年 延迟焦化装置 2390 92.1 117 9.3

 

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足球彩票 JISHIZONGJIEFAMENSHEJI、ZHIZAO、SHIYONGGUOCHENGZHONGDEJINGYAN,ZHAOCHUWOMENZAISHIJIGONGZUOZHONGYUDAODEYIXIEWENTI,TICHUJIEJUEZHEIXIEWENTIDESILUHEFANGFA,DUIJINYIBUDICUJINWOGUOFAMENZHIZAODEZHENGTISHUIPING,TIGAOFAMENXINGYEDEJINGJIXIAOYI,SHIFENBIYAO。

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    3 FAMENSHIYONGXUQIU

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足球彩票     4 JIDIANXIANGFAHEJIANYI

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    (4)ZAIHETONGMEIYOUGUIDINGTESHUYAOQIUDEQINGKUANGXIA,YINGGENJUBIAOZHUNGUIDINGYANGEZHIXING。RUANZHAOSHIHUAXINGYECHANGYONGDE API600、API602、API6D、SH3064-94《SHIYOUHUAGONGGANGZHITONGYONGFAMENXUANYONG、JIANYANJIYANSHOU》DEGUIDING,JIEHESHIHUAQIYETEDIANJINXINGFAMENDESHEJI、ZHIZAOHEJIANYAN。GENJUZHEIXIETESHUFAMENDETEDIAN(RUCUIHUAZHUANGZHILINJIELIUSUPENZUICHUKOUGUANDAOSHANGDENAIMOFA、JIAQINGLIEHUAZHUANGZHIFANYINGCHANWUGUANDAOSHANGDEFAMENYIJI SHA JIGUANDAOYONGFAMENDENG),FAMENCHANGZHIDINGXIANGYINGDESHENGCHANGONGYI、ZHILIANGGUANLITIXI,CONGZHIZAOJIGUANLISHANGJIUQUBIEYUYIBANTONGYONGFAMEN。

    (5)GUANGFANJIAQIANGXINXIJIAOLIU,JIAQIANGGONGXUSHUANGFANGDEXIANGHULEJIE,SHICHANPINSHENGCHANDUILU。JIANYIFAMENCHANGYUSHIHUAXINGYEDESHEJI、SHIGONGJIJIANSHEDANWEIGONGTONGJINXINGJISHUHEZUO,JIUMUQIANFAMENDESHENGCHANJISHU、GUANLI、BIAOZHUNDENGGONGTONGXINGDEWENTIJINXINGTANTAO,TICHUGAIJINDECUOSHI,CONGERTIGAOFAMENDECHANPINZHILIANG:

    (6)FAMENCHANGYUYONGHUYINGXIEDIAOTONGYIJIANYAN、SHIYABIAOZHUN。MUQIANBUSHAOFAMENSHIYAZHENGZHIWENTIWANGWANGFASHENGZAIFAMENCHANGHEYONGHUDESHIYATIAOJIAN(RUSHEBEI、SHIYAJIEZHI、BAOYASHIJIAN)、SHIYAXIANGMU(RUQIMI、SHANGMIFENG)BUWANQUANXIANGTONG,YINERGESHUOQILI,WUFAYONGTONGYIDEBIAOZHUNHENGLIANG。JB/T9092 《FAMENDEJIANYANYUSHIYAN》DI 7.2 TIAOGUIDING“RUGUODINGHUOHETONGMEIYOUGUIDINGYOUXUFANGJINXINGZAISHIYANSHI,YISHIYANGUODEFAMENJIUBUBIJINXINGZAISHIYAN。……”YEJIUSHISHUO,DANGXUFANGYAOQIUJINXINGZAISHIYANSHI,SHUANGFANGYINGZAIHETONGZHONGMINGQUEGUIDINGSHIYANBIAOZHUN、SHIYANFANGFA、SHIYANJIEZHIDENGTIAOJIAN,ERQIEYINGYUZAIZHIZAOCHANGJINXINGDESHIYANYAOQIUXIANGYIZHI。

    TIGAOFAMENZHILIANGSHIYIXIANGXITONGGONGCHENG,XUYAOYOUGUANDESHEJI、ZHIZAOHEYONGHUDANWEITONGLIHEZUO,GAIJINYIYOUCHANPIN,KAIFAYANZHIXINCHANPIN,WEIWOGUOSHIHUAGONGYEDEFAZHANZUOCHUGONGXIAN。

 

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